NullOverNull

45 reputation

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visits	member for	10 months
	seen	Feb 23 at 17:32
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	45 reputation	bio	website		visits	member for	10 months
4 badges		location			seen	Feb 23 at 17:32

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Feb 23	accepted	Eliminating an inner sum for a double sum
Feb 23	comment	Eliminating an inner sum for a double sum @AndréNicolas L = floor(N/k) if that matters
Feb 23	asked	Eliminating an inner sum for a double sum
Feb 23	accepted	A way to simplify $\gcd(a,b)$ condition in a double sum?
Feb 22	accepted	Reducing this sum to closed form
Feb 22	awarded	Commentator
Feb 22	comment	Reducing this sum to closed form See tinyurl.com/b9zw4nq
Feb 22	comment	Reducing this sum to closed form Do I absolutely have to multiply everything out? I had done so on Wolfram and it looked quite long and unreadable. You are saying I have to multiply it all out and then sum each piece separately?
Feb 22	revised	Reducing this sum to closed form edited tags
Feb 22	comment	Reducing this sum to closed form Please stop adding homework tags to my posts -- this is not homework
Feb 22	asked	Reducing this sum to closed form
Feb 22	comment	A way to simplify $\gcd(a,b)$ condition in a double sum? @IvanLoh And how do you transform the (L+1-b) to that phi(n) expression in the third step? Where did b go?
Feb 22	comment	A way to simplify $\gcd(a,b)$ condition in a double sum? @IvanLoh Where does L^2+2 come from
Feb 22	awarded	Scholar
Feb 22	awarded	Editor
Feb 22	revised	A way to simplify $\gcd(a,b)$ condition in a double sum? added 151 characters in body
Feb 22	asked	A way to simplify $\gcd(a,b)$ condition in a double sum?
Jul 2	comment	Trying to find the name of this Nim variant @StevenStadnicki My $S$ would be dynamic then, since there would be times when taking $x$ stones from the pile is OK in one instance but not in another, since the end result must be a part of $V$.
Jul 2	comment	Trying to find the name of this Nim variant @StevenStadnicki I vaguely understand it as the distance from winning position (a grundy number of 1 meaning you're one step away from a winning position or something to this effect). I am also not sure about periods, since my set $V$ has an exponential recurrence
Jul 2	comment	Trying to find the name of this Nim variant In my case, $V$ follows a recurrence. My issue is that I don't even know where to begin analyzing in order to develop a strategy that doesn't rely on brute scanning/trial and error/etc.